merc engine question

[fujimo]

I've got a 1996 7.4 merc. engine it's a gen 5 motor.I have'nt pulled the intake yet to make sure but I think the heads aer peanut ports.Can anyone tell me with the numbersthey are 10114156,and is there a good site for gm part numbers. Thanks Roy

[Floored]

Yes the 4156 is the really small peanut port, I have some on the stand in the garage. 7.4 merc gen 5 motor. http://www.mortec.com/castnum.htm

[fujimo]

thanks for the reply i'm not expecting to much out of this engine. i'm just trying to gwt this boat running while i restore my other boat.

[fujimo]

heres apic of the boat hope to have it ready for cbbb.http://www2.***boat.com/image_center/data/520/1018R5-med.jpg it's a little rough but it'll do while i finish my other boat.

[ECeptor]

Here's some info on the 156 and other BBC heads.
http://www.strokerengine.com/page/page/1268049.htm